Osprey Carbine Drop-In Gas Piston Kit for AR15 / M16

This quality Gas Piston Drop-In Upgrade Kit for your AR15/M16 is an easy installation offering higher reliability and ease of maintenance. Switching to a gas piston operating system from a direct gas impingement system leads to a cleaner and cooler operating rifle. This should lead to fewer malfunctions and considerably more time between cleanings. The OPS-416 kit is a true drop-in gas piston conversion, installing easily in a few minutes with a minimum of tools or technical expertise. The kit contains: Solid Billet Bolt Carrier; Piston; Piston Chamber; Operating Rod and a pair of High Heat Handguards. It fits on barrels no greater than 1.00" diameter, and functions with these calibers: 223 Rem/5.56x45mm NATO; 5.45x39mm Russian; 6.5 Grendel; 6.8mm Rem SPC and is compatible with suppressor and full-auto modes of fire. Made in the USA.

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Special Build

Are you looking for a rifle with additional accessories we offer factory installed?

With the help of your local FFL dealer, our Special Build Program allows you to choose almost any accessories or configurations we offer and turn it into your dream rifle, directly from the Factory to your FFL dealer.

Visit your local dealer and inquire about Windham Weaponry's Special Build Program today. A rifle made by you, just for you!